Fungicide



Patented Mar. 13, 1928 uurrso STATES PATENT orrlcs.

HUGO In KLEINHANS, OE NEWARK, NEW JERSEY, ASSIGNOR TO CHARLES COOPER & COMPANY, INC., NEWARK, NEW JERSEY, A GOBEORATIOIIOF NEW JERSEY.

EUNGICIDE.

I I0 Drawing.

This invention relates to a fungicide to be used for the elimination of say fl and stinking smut and has for its mam 'o ect and feature the production of a compound I permitting carbonate of copper to used, without undue expense, as a fungicide and without lessening its value as a fungicide.

Carbonate of copper contains from fifty to fifty-two per cent of metallic copper and is correspondingly high in price making its use as a fungicide practically prohibitive. I have found that its qualities as a fungicide are improved by inixin sulphur with it. Specifically I use flour su phur.

I have found that by'mixing carbonate of copper and sulphur in about the proportion by weight of forty per cent carbonate of copper and sixty per cent sul' hur that a one hundred er cent fungici e is produced capable 0 suspension 1n water and which at. the same time has fertilizing value. Of course the proportions of these ingre dients may be varied widely. This mixture contains about twenty per cent copper and is therefore not so expensive as to render Application filed November 1, 1924. Serial' no. 747,381.

its use prohibitive. Furthermore, by using carbonate of copper and sulphur as reciprocal diluents in the manner above stated, I find that not only is the mixture rendered miscible in watenbut that .while the individual fungicidal properties of each of the ingredients are retained, the carbonate of copper neutralizes in the'soil the acid compounds formed by the sulphur.

Thecompound may he used either as a dry or as a wet sprav.

I claim:

I A fun icide comprising: a mixture of suL hur an carbonate of copper as reciprocal iluents'whereby the said admixture is ren- 40 dered miscible in water, and said carbonate of copper acting, While each of the ingre dients retains its own fungicidal properties, to neutralize in the soil the acid compoundsformed by the sulphur.

Signed at- New York in the county of New York and State of New York, this 31 day of October, 1924.

HUGO L. KLEINHANS. 

